1. This ensures smooth rotation of the cylinder wrench while blocking access to the impact keys. 2. We offer locking cylinders in various sizes, including double and button lock options, to meet different installation needs and enhance home security. 3. When inserting the key, the rotation is even and jam, ensuring effortless opening and closing of the lock cylinder. 4. Nickelplated cylinder locks are compatible with a wide range of doors, such as wooden, composite, metal, interior, front doors, and most doors with keyholes. 5. Durable and easy to install, this product is ideal for most households. 6. Competitively priced, it offers a fit and an appealing design to match your lock cylinder preferences. 7. Enhanced door safety is achieved without costly handle upgrades or additional security devices. 8. The key door lock features anticollision protection and prevents pin trapping, ensuring smooth key rotation while blocking impact button input.